Err20 on all three of my R5's

[OakandGold]

Hi all. I'm at my witts end with these cameras. Im a full time wedding photographer and I have 3 R5's. I am getting the err20 on ALL of them. And they all are only around a year old. They have nowhere near the amount of shutter clicks that should cause the shutters to fail. It seems almost as if they're getting stuck. Its weird. 

I only use canon RF lenses, only use canon batteries, do not use any sort of 3rd party anything on them. I have also updated all firmware on the cameras and lenses. Still, Im getting the errors. 

I have been a lifelong canon user. From rebels to all of the 5D ones and now the R5s. I absolutely love these cameras but I cannot trust these cameras at this point. I had to rent a camera at my last wedding. Which is ridiculous since I spent close to 12k on these. 

Any suggestions? I guess I will have to send them in but after spending this money on these and them ALL failing within the first year is absolutely unacceptable. 

[shadowsports]

The $499 is indeed boiler plate.  Its the standard rate for a motherboard replacement.   

[jrhoffman75]

What are the shutter counts?

[JorgeSaenz87]

Hello, were you able to solve error 20 on your R5 cameras, I have the same problem, I changed the shutter and the stabilizer and it still shows error 20, my last option is to change the sensor but I don't know if that will solve it, thank you for your Answer, excuse my English, my native language is Spanish.